Scrivener is a modern word processor, that has scriptwriting capabilities and supports cyrillic fonts/letters. Maybe it's not No.1, but certainlly can be of use for you guys. I just tested cyrillic document exporting to a PDF file. No need to thank me.

Hello!It's been years since the release of Story, and I love it's integrated workflow with the rest of the Adobe Suite... But the impossibility of exporting PDF in Cyrillic, and other glitches (the outline part of the window isn't working properly either) when working with this alphabet makes it just impossible to implement it's workflow in any Russian production, and it's a real shame. Is anyone working on this? It shouldn't be such a big issue to solve!